package cn.tedu.web.sybh;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(urlPatterns = "/sybh/*")
public class CoreFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response =(HttpServletResponse) resp;

//        request.getRequestURI();
//        request.getRequestURL();

        String uri = request.getRequestURI();
        if("/sybh/login.jsp".equals(uri)||uri.endsWith(".css")){
            chain.doFilter(req,resp);
            return;
        }
        HttpSession session = request.getSession();
        Object uid = session.getAttribute("UID");
        if(uid == null){
            response.sendRedirect("/sybh/login.jsp");
            return;
        }
        chain.doFilter(req,resp);


    }

    @Override
    public void destroy() {

    }
}
